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import { Comment } from '@ts/types/app';
import { RawComment } from '@ts/types/raw-data';
import { getAuthorFromRawData } from '@utils/helpers/author';
import { fetchAPI, getAPIUrl, SendCommentVars } from './api';
import { sendCommentMutation } from './comments.mutation';
import { commentsQuery } from './comments.query';
/**
* Create a comments tree with replies.
*
* @param {Comment[]} comments - A flatten comments list.
* @returns {Comment[]} An array of comments with replies.
*/
export const buildCommentsTree = (comments: Comment[]): Comment[] => {
type CommentsHashTable = {
[key: string]: Comment;
};
const hashTable: CommentsHashTable = Object.create(null);
const commentsTree: Comment[] = [];
comments.forEach(
(comment) => (hashTable[comment.id] = { ...comment, replies: [] })
);
comments.forEach((comment) => {
if (!comment.parentId) {
commentsTree.push(hashTable[comment.id]);
} else {
hashTable[comment.parentId].replies.push(hashTable[comment.id]);
}
});
return commentsTree;
};
/**
* Convert a comment from RawComment to Comment type.
*
* @param {RawComment} comment - A raw comment.
* @returns {Comment} A formatted comment.
*/
export const getCommentFromRawData = (comment: RawComment): Comment => {
const { author, databaseId, date, parentDatabaseId, ...data } = comment;
return {
id: databaseId,
meta: {
author: getAuthorFromRawData(author.node, 'comment'),
date,
},
parentId: parentDatabaseId,
replies: [],
...data,
};
};
/**
* Retrieve a comments list by post id.
*
* @param {number} id - A post id.
* @returns {Promise<Comment[]>} The comments list.
*/
export const getPostComments = async (id: number): Promise<Comment[]> => {
const response = await fetchAPI<RawComment, typeof commentsQuery>({
api: getAPIUrl(),
query: commentsQuery,
variables: { contentId: id },
});
const comments = response.comments.nodes.map((comment) =>
getCommentFromRawData(comment)
);
return buildCommentsTree(comments);
};
export type SentComment = {
clientMutationId: string;
success: boolean;
comment: {
approved: boolean;
} | null;
};
/**
* Send a comment using GraphQL API.
*
* @param {SendCommentVars} data - The comment data.
* @returns {Promise<SentEmail>} The mutation response.
*/
export const sendComment = async (
data: SendCommentVars
): Promise<SentComment> => {
const response = await fetchAPI<SentComment, typeof sendCommentMutation>({
api: getAPIUrl(),
query: sendCommentMutation,
variables: { ...data },
});
return response.createComment;
};
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